noise rotation 中文意思是什麼
noise rotation
解釋
噪波旋轉-
On the basis of geometric correction for remote sensing images data, detailed character analysis was conducted for the tm images. several image transformations which are linear scale transformation, ratio processing, principal components transformation, tasseled - cap transformation and minimum noise fraction rotation ( mnf transformation ) were then implemented
在對研究區數據進行幾何精校正的基礎上，對tm數據進行了詳細的特徵分析，並對其進行了有利於植被信息提取的幾種圖像變換：線性拉伸、比值增強、主成分變換、纓帽變換以及最低噪聲分離變換（ mnf變換） 。 -
The ship radiated noise is analyzed and its 4 features are extracted from the envelop spectrum. the envelope of ship noise waveform can be demodulated utilizing hilbert transform, and the spectrum components with line rotation frequency of propeller shaft are extracted effectively by bispectrum, 1 ( 1 / 2 ) spectrum and 2 ( 1 / 2 ) spectrum analysis
對于通過希爾伯特變換解出的艦船輻射噪聲包絡信號進行高階統計量分析，有效地提取出了艦船噪聲的雙譜、 11 / 2維譜、 21 / 2維譜等方面的特徵。 -
In the terms of interpolation, the image reconstructed from nearest interpolation or linear interpolation has good edge but serious noise ; reconstruction from 4 * 4cubic interpolation or three b - spline or three - order lagrange interpolations has better local character. 2 x 2cubic interpolations which has both better edge and local character is the ideal interpolation, the following is the basic principle during reconstruction : ( 1 ) the more width of interpolation, the more number of summation and the more order of interpolation polynomial, the higher of density resolution ; ( 2 ) the more of interpolation polynomial and width of interpolation, the more of reconstruction time simultaneously, aimed at eliminating the effects of noise contained in projection data, in this paper, author analysis cause and effects of common artifacts. importantly, discusses convolution back - projection reconstruction algorithm with a shift axis of rotation has been derived for correcting images that acquired with a divergence axis of rotation using the fan beam geometry with an angle - equaled detector
在ct圖像重建時，選擇有限帶寬窗有較好的空間解析度，三角形窗有較好的密度解析度，選擇餘弦窗則使得空間解析度與密度解析度的折衷；從窗函數的頻譜角度來講，可以用於圖像重建的一個良好的卷積窗函數應該具備以下條件： （ ? ）小的3db帶寬b ，即最小的主瓣寬度； （ ? ）最小的旁瓣最大峰值a ； （ ? ）最大的旁瓣峰值衰減速度d ；就內插函數而言，臨近點內插與線性內插重建圖像噪聲大，但有較好的邊緣與細節； 4 4三次內插、三次b -樣條與四次拉格朗日多項式內插圖像平滑，局部特性較好。 -
The turbocharger noise is formed by the rotation noise resulting from the periodical air cutting of the fan blade and the turbulent noise of high - speed gas flows. as a continuous high frequency noise, it mainly falls between the 500 to 10 000 hz range
渦輪增壓器的噪聲是由於葉片周期性地切割空氣產生的旋轉噪聲和高速氣流形成的湍流噪聲而形成的，是一種連續性的高頻噪聲，主要分佈在500 ~ 10000hz的頻率范圍。 -
Taking the ffc ? 23a disk mill as a specimen model, the rotation noise generated from the interaction between fixed claws distributed on the outer and inner circle of the fixed claw plate and the corresponding moving claws has been separated in an experimental study by the modern analytic method of acoustic. thereby, a conclusion that the principal component of rotation noise in disk mill comes from the interaction between the fixed claws on the outer circle and the corresponding moving claws has been reached. in accordance with the above, modified noise reduction design for the structural parameters such as the number of claws on the fixed claw plate, shape of claws and the relative positions of the claws arranged on the outer circle and inner circle has been carried out
本文以ffc ? 23a型爪式粉碎機為樣機，利用現代聲學測試分析手段對其工作時定齒盤內、外圈齒與相應動齒作用產生的旋轉噪聲進行了試驗分離研究，從而得出了爪式粉碎機旋轉噪聲的主要成分源自外圈定齒與其相互作用的動齒產生的噪聲，並以此為基礎，對定齒盤的齒數、齒形以及內、外圈齒的相對排列位置等結構參數進行了降噪改進設計，通過對比性試驗與分析，獲得了旋轉噪聲與上述結構參數間的關系，並取得了負載6 . 7db （ a ）的良好降噪效果。 -
For one same engine, the noise level is highly dependent on the rotation speed. when the rotation speed doubles, the air inlet noise can increase by 10 to l5db ( a )
對于同一臺發動機來說，受轉速的影響最大，轉速提高一倍可導致進氣噪聲增加10 ~ l5db （ a ） 。 -
The cooling fan noise comprises the rotation noise and the turbulent noise
風扇噪聲由旋轉噪聲和湍流噪聲構成。 -
In order to analyze the rotation noise further, a new method for measuring the amplitude and phase of each harmonic component of periodic signal mixtures is established based on the morlet transform and fourier transform in theory, which will provide scientific warranty for reducing noise of disk mill
為了進一步分析爪式粉碎機的旋轉噪聲，理論上利用morlet小波變換結合fourier變換對旋轉噪聲各次諧波成分的振幅和初相位的提取，作了初步探討。 -
Smooth movement : as efforts to the design of the tower in any location continuous rotation ( either perspective, speed / acceleration ), therefore, transmission device operates smoothly, no vibration and noise
平穩運動：由於出力轉塔的設計是在任何位置連續旋轉（無論是角度、速度和/或加速） ，因此，傳動裝置運轉平穩，無振動和噪音。 -
For one same engine, the rotation speed and the loading of the engine are among the most key factors that contribute to the exhaust noise
對同一臺發動機來說，發動機轉速和負荷是影響其排氣噪聲的最主要因素。 -
Zlgd series vertical low rotation speed centrifugal pump is applicable for occasions with low requirements for environment noise, air - conditioning circulation, etc
Zlgd系列立式低轉速離心泵，適用於環境噪聲要求很低的場合及空調循環等。 -
Experiment shows that image compare search engine besides can get exactly similar imag e of query image, it can get right feedback image for query image with rotation, faintness, noise and so on
實驗結果表明，圖像比對搜索引擎能夠找出正確的圖像，並對圖像的旋轉、模糊或噪音等干擾容錯性能好，能有效的提高圖像比對搜索引擎在實際應用中的可適性。 -
By storing a beacon image in aircraft as reference and regarding actual beacon image as the sum of reference image and additive gaussian white noise, the values of rotation and translation for beacon image were calculated according to phase correlation and dft ( discrete fourier transfer )
該方法的原理是在航天器上存儲一幅信標圖像作為參考，把實際信標圖像看成參考信標圖像和附加高斯白噪聲和的形式，基於離散傅里葉變換和相位相關技術對信標的旋轉因子和平移因子進行計算。 -
The experiment results show that the watermark embedded is rather robust to various attacks such as adding noise, rotation, translation, scaling, insecting, down - sampling and some of their combinations
實驗表明該演算法魯棒性較好，對噪聲、旋轉、平移、縮放、剪切、降采樣及其聯合攻擊的抵抗性較強，並且演算法復雜度較低。 -
The amb has many advantages such as contact - free, no need of lubrication, no wear, low noise, high rotation speed, etc. the maximum speed is only limited by the material intensity of the rotor
磁軸承不存在機械接觸，具有無摩擦、無磨損、無需潤滑等特點，轉子可以高速旋轉，其轉速只受轉子材料的限制。 -
A solution research for china millennium monument rotation noise testing
中華世紀壇旋轉噪音測試方法的研究 -
In this paper, we also use the transfer matrix to simplify the rotation drive system, analyzed the system natural frequency to ensure the motion frequency far away the natural frequency to avoid the resonance, debased the noise of the equipment
用傳遞矩陣法簡化了成角和轉角驅動系統，並分析了該系統的固有頻率，確保系統運動的頻率遠離其本身的固有頻率，以免發生共振，降低整個系統的噪聲。
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